Isoscalar-vector interaction and its influence on the hadron-quark phase transition

doi:10.13538/j.1001-8042/nst.2013.05.023

Nuclear Science and Techniques ›› 2013, Vol. 24 ›› Issue (5): 050523 doi: 10.13538/j.1001-8042/nst.2013.05.023

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012) • Previous Articles Next Articles

Isoscalar-vector interaction and its influence on the hadron-quark phase transition

SHAO Guoyun^1,* COLONNA Maria² DI TORO Massimo^2,3 LIU Yuxin^4,5 LIU Bo^6,7

¹Department of Applied Physics, Xi'an Jiao Tong University, Xi’an 710049, China
²INFN-Laboratori Nazionali del Sud, Via S. Sofia 62, Catania , I-95123, Italy
³Departmentof Physics and Astronomy, University of Catania, Via S. Sofia 64, Catania I-95125, Italy
⁴Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University , Beijing 100871, China
⁵Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China
⁶Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
⁷Theoretical Physics Center for Scientific Facilities, Chinese Academy of Sciences, Beijing 100049, China

Contact: SHAO Guoyun E-mail: shaogy@pku.edu.cn
Supported by:
Supportedby National Natural Science Foundation of China (NSFC) projects (Nos.11147144 and 11305121)

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SHAO Guoyun, COLONNA Maria, DI TORO Massimo, LIU Yuxin, LIU Bo. Isoscalar-vector interaction and its influence on the hadron-quark phase transition .Nuclear Science and Techniques, 2013, 24(5): 050523 doi: 10.13538/j.1001-8042/nst.2013.05.023

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Abstract

Abstract:

Thehadron-quark phase transition is studied with the newly constructed Hadron–Poyakov-Nambu–Jona-Lasinio (PNJL) model. Particularly, in the description of quark matter, weinclude the isoscalar-vector interaction. With the constraints of neutron starobservations, our calculation shows the isoscalar-vector interaction betweenquarks is indispensable if massive hybrids star exist in the universe. Itsstrength determines the onset density of quark matter, and the mass-radiusrelations of hybrid stars. Also, as a connection with heavy-ion-collisionexperiments, we discuss the strength of isoscalar-vector interaction and itseffect on the signals of hadron-quark phase transition in heavy-ion collisions,such as NICA at JINR-Dubna and FAIR at GSI-Darmstadt.

Key words: Hadron-quark phasetransition, Neutron star, Heavy-ion collisions

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Isoscalar-vector interaction and its influence on the hadron-quark phase transition

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